Elevator-gear.



No. 693,'2l2. Patented Feb. n, |902.

W. M. BAINBRIDGE.

ELEVA=TUR GEAR.

. Application filed Muy 28, 1901.) l (nu Model.) 2 sheets-shet YM: NonmsPETERS co. PNGTOLITHQ.. wgsmncon, n. c.

W. M. BAINBRIDGE.

E'LEVATOR GEAR.

' I (Application tiled May 28, 1901. l (No Model.) 2 sheets-sheet' 2.

Patented Feb. II,A

TH: NuRms PETERS ca, PHOTO-Limo.. wAsHmGYoN. u. c.

UNITED STATES PATENT OFFICE..

VILLIAM MARTIN BAINBRIDGE, OF ELKTON, COLORADO.

ELEVATORG EAR.

SIPECIFICATION forming part of Letters Patent N o. 693,212, datedFebruary 11, 1902.

Application filed May 28, 1901. Serial No. 62,234. (No model.)

To all whom, t 'may concern:

Be it known that I, WILLIAM MARTIN BAIN- BRIDGE, a citizen of the UnitedStates, and a resident of Elkton, in the county of Teller and State ofColorado, have invented a new and nection, although it will beunderstood that.

theoretically the gear is applicable to elcvators or lifts of anysort.

This specification is a specific description of one form of theinvention,while the claims are deinitions of the actual scope thereof.

Reference is to be had to the accompanying drawings, forminga part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is an elevation of the invention with parts in section. Fig. 2is an enlarged side view of the gear, and Fig. 3 is an enlarged end Viewthereof.

4. indicates the elevator, and 5 the shaft.

In Fig. 1, 6 indicates railway-rails which are designed to carrytram-ears raised by the elevator. Mounted at each end of the Hoor 7 ofthe elevator-cage is a rock-shaft 8, provided with dogs 9. These shafts8 are adapted to rock to throw the dogs 9 outward, so that they mayengage in seats 10, formed in the framing of the shaft 5. This action isshown by dotted lines in Fig. 1, and when the dogs 9 are so disposed theelevator-cage will be locked in position. At one end each shaft 8carries a crank 11, and with these cranks are respectively connectedrods 12 and 14. The rod 12 is attached to the lower end of a hand-lever15, fulcrumed on the floor 7 of the elevatorcage, and the rod 14. isattached to the lever 15 at apoint opposite the side of the fulcrum atwhich the rod 12 is connected, or, in other words, at a point above thefloor of the elevator-cage. A retractile spring 16 is connected to the.cranks 11, and by thisV action the dogs 9 are normally held in verticalor inactive position. By throwing the lever 15 from that indicated bydotted lines in the same gure the action of the rods 12 and 14 will rockthe shafts 8, so as to throw outward the dogs 9 and lock theelevator-cage. The upper end of the lever 15 plays in a guide 18,attached 55 to the framing of the elevator-cage, and pivotally connectedwith the upper end'of the lever above the guide 18 is a handpiece 17 tofacilitate the manualoperation of the lever. When inactive, thehandpiece drops 6o into the position shownby dotted lines in Fig. 1."Now it will be seen that when the handpiece 17 is releasedthe spring 16will return the parts to the position shown by full lines in Fig. 1. Bythrowing the lever 15 con- 65 trary to the action of the spring theparts will lbe thrown into operative position, and when theelevator-cage is at the proper elevation the dogs 9 will engage in theseats 10.

Having thus described my invention, I 7o claim as new and desire tosecure by Letters Patent- 1. The combination with an elevator-cage, ofdogs pivotally hung thereon, a hand-lever fulcrumed on the cage, armspivotally connected with the hand-lever at opposite sides of the fulcrumthereof and having connection respectively with the dogs, and aretractile spring extending between the dogs and tending to draw themtoward each other into in- 8o active position. Y

2. The combination with an elevator-cage, of rock-shafts mountedthereon, dogs carried bythe rock-shafts and depending therefrom,- cranksconnected with the roek-shafts,a handlever fulcrumed on theelevator-cage,- arms pivotally connected with the hand-lever at iopposite sides of the fulcrum thereof, and a retractile spring connectedwith the cranks and tending to draw the dogs together,where 9o by tohold them in active position.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses'.

WILLIAM MARTIN BAINBRIDGE.

Witnesses: v -f BURT OHALONER, A. A. RUMMEL.

the position shown in full lines in Fig. 1 to 5o l

